Can't speak for the Hornady brand, but I have a different brand. what I have is still petroleum based, you you still have to clean it off the case after sizing. Just like regular sizing lube, if you get too much on it, you'll get dents. It took me a few trys to get it right, but I now just lightly spray the cases in a loading block, and let them stand for a few minutes(the directions reccomend it) and then size. I haven't yet had a stuck case..knock on wood...